It was the place where salt had been produced until 1996 since the production of the salt field by the Japanese. Seawater was introduced over the salt field twice a day, creating a mud flat. Also, it was busy with ships delivering the produced salt.

Current status of Sorae Ecology Park

With the completion of the park formation business in May 2009 to restore the mud flat, tidal channel, and closed salt field as the bed of various living creatures and habitat for migratory birds, Sorae Ecology Park enables the observation of various marine creatures in the marsh and experience of facility while providing an exhibition hall that presents the information on the facility where salt was produced in the past. Also, it is possible to experience sea salt production and explore various animals and plants in the Nature Learning Center besides the wide range of reed field, windmill, trails, and rest areas. Such facilities are being utilized as a space of rest and relaxation for the citizens.